diff --git a/DEVELOPING.md b/DEVELOPING.md
index cbfdfb38..c39be7c0 100644
--- a/DEVELOPING.md
+++ b/DEVELOPING.md
@@ -37,7 +37,7 @@ multiplicatively. It usually doesn't make sense to multiply a `wad` by a
 
 Two multiplaction operators are used in `dss`:
 
-- `mul`: standard integer multiplcation. No loss of precision.
+- `mul`: standard integer multiplication. No loss of precision.
 - `rmul`: used for multiplications involving `ray`'s. Precision is lost.
 
 They can only be used sensibly with the following combination of units: